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vastus medialis and patellofemoral

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https://www.readbyqxmd.com/read/29879639/the-effects-mechanisms-of-increasing-running-step-rate-a-feasibility-study-in-a-mixed-sex-group-of-runners-with-patellofemoral-pain
#1
Bradley S Neal, Christian J Barton, Aleksandra Birn-Jeffrey, Monica Daley, Dylan Morrissey
OBJECTIVES: To explore feasibility of recruitment and retention of runners with patellofemoral pain (PFP), before delivering a step rate intervention. DESIGN: Feasibility study. SETTING: Human performance laboratory. PARTICIPANTS: A mixed-sex sample of runners with PFP (n = 11). MAIN OUTCOME MEASURES: Average/worst pain and the Kujala Scale were recorded pre/post intervention, alongside lower limb kinematics and surface electromyography (sEMG), sampled during a 3 KM treadmill run...
May 31, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29872355/potential-factors-associated-with-knee-pain-in-cyclists-a-systematic-review
#2
REVIEW
Rodrigo Rico Bini, Alice Flores Bini
The potential factors associated with overuse injuries and pain in cyclists that are supported by evidence remain unclear. Our study aimed at assessing, using a systematic search of the most updated evidence, the main factors related to overuse knee-related pain and/or injuries in cyclists. The search assessed any potential mechanism related to knee pain or injury that could be used in the clinical practice. Databases were searched (i.e., PubMed, Scopus, Web of Science, and EBSCO). Studies were included if they presented results from original studies...
2018: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/29868436/surgical-technique-anatomic-medial-patellofemoral-ligament-retensioning-repair
#3
Ricardo Hideki Yanasse, Guilherme Aravechia, Tiago Rocha Ramos, Luiz Gustavo Lucena Augusto Lima, Danilo Zanutto de Oliveira Medeiros, Marcos Henrique Ferreira Laraya, Roberto Ryuiti Mizobuchi
The medial patellofemoral ligament (MPFL) and the MPFL/vastus medialis obliquus complex are essential for patellar stability. Insufficiency of the MPFL can lead to altered biomechanics and patellofemoral joint contact pressure, high recurrence rate, osteochondral lesions, compromised knee function, and patellofemoral osteoarthritis. Most frequently surgical reconstruction of the MPFL is performed to address patellar instability; however, open physis and donor site morbidity can be a concern. This Technical Note presents a surgical technique to identify the insufficient MPFL and describes in detail an anatomical retensioning repair of the MPFL to restore patellar stability...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29843298/preferential-strengthening-of-vmo-muscle-during-selected-biomechanical-rehabilitative-exercises-of-automotive-workers-with-patellofemoral-pain-syndrome
#4
Greesh Kumar Singh, Sanjay Srivastava
BACKGROUND: Automotive workers are engaged in occupational activities like engine tune-ups, oil changes, tire rotation, wheel balancing, replacing filters etc. These activities involve prolonged sitting, awkward postures, squatting and kneeling, which are known risk factors to cause patellofemoral pain syndrome (PFPS). OBJECTIVE: This paper aims to investigate the effects of selected biomechanical rehabilitative exercises (BRE) on integrated electromyography (iEMG) activity of vastus medialis oblique (VMO) and vastus lateralis (VL) muscles so as to identify suitable ones to alleviate PFPS of automotive workers...
May 22, 2018: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29675504/surgical-treatment-of-objective-patellar-instability-long-term-results
#5
Massimo Berruto, Francesco Mattia Uboldi, Paolo Ferrua, Giovanni Vergottini, Andrea Manunta
Purpose  To evaluate the long-term results of classical "à la carte" surgical treatment of objective patellar instability as proposed by Dejour in 1987. Methods  A multicentric retrospective study was conducted evaluating patients that underwent surgical procedure with a 10-year minimum follow-up (mean 12.7; range, 10-15). Surgical procedures were medial transfer of the tibial tubercle transfer according to Elmslie and Trillat et al in 38 cases, plasty of the vastus medialis obliquus according to Insall in 15 cases, open lateral retinacular release in 13 cases, capsuloplasty in 3 cases, and trochleoplasty in 1 case...
March 2018: Joints
https://www.readbyqxmd.com/read/29581655/effect-of-squatting-velocity-on-hip-muscle-latency-in-women-with-patellofemoral-pain-syndrome
#6
Ignacio Orozco-Chavez, Guillermo Mendez-Rebolledo
[Purpose] Neuromuscular activity has been evaluated in patellofemoral pain syndrome but movement velocity has not been considered. The aim was to determine differences in onset latency of hip and knee muscles between individuals with and without patellofemoral pain syndrome during a single leg squat, and whether any differences are dependent on movement velocity. [Subjects and Methods] Twenty-four females with patellofemoral pain syndrome and 24 healthy females participated. Onset latency of gluteus maximus, anterior and posterior gluteus medius, rectus femoris, vastus medialis, vastus lateralis and biceps femoris during a single leg squat at high and low velocity were evaluated...
March 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29564075/patellofemoral-pain-syndrome-in-female-athletes-a-review-of-diagnoses-etiology-and-treatment-options
#7
Molly Vora, Emily Curry, Amanda Chipman, Elizabeth Matzkin, Xinning Li
Patellofemoral pain syndrome (PFPS) is one of the most common causes of knee pain and is present in females disproportionately more relative to males. PFPS causes tend to be multifactorial in nature and are described in this review. From a review of the current literature, it is clear that there needs to be further research on PFPS in order to better understand the complex etiology of this disorder in both males and females. It is known that females with patellofemoral pain syndrome demonstrate a decrease in abduction, external rotation and extension strength of the affected side compared with healthy patients...
December 14, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/29540410/clinical-effectiveness-of-patella-mobilisation-therapy-versus-a-waiting-list-control-for-knee-osteoarthritis-a-protocol-for-a-pragmatic-randomised-clinical-trial
#8
Regina Wing Shan Sit, Keith Kwok Wai Chan, Benjamin Hon Kei Yip, Daisy Dexing Zhang, Kenneth Dean Reeves, Ying Ho Chan, Vincent Chi Ho Chung, Samuel Yeung Shan Wong
INTRODUCTION: Knee osteoarthritis (KOA) is a common, disabling and costly medical condition. The patellofemoral joint is a critical source of pain in individuals with KOA, and coexistence of patellofemoral osteoarthritis (PFOA) and tibiofemoral osteoarthritis (TFOA) is sometimes observed. The identification of subgroups with PFOA and customised interventions to correct underlying pathomechanics is beneficial for individuals with KOA. This study aims to evaluate whether a clinic-based patella mobilisation therapy (PMT) leads to significant improvement in pain, physical function and quality of life of individuals with KOA...
March 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29500485/mri-findings-associated-with-medial-patellofemoral-capsuloligamentous-plication
#9
William R Walter, Hien Pham, Robert J Meislin, Laith M Jazrawi, Christopher J Burke
OBJECTIVE: To review the MRI appearance of medial patellofemoral capsuloligamentous plication (also known as reefing or imbrication) for proximal patellar realignment in patients with patellofemoral instability. MATERIALS AND METHODS: Retrospective analysis of our surgical and PACS databases identified cases of medial plication performed between June 2011 and July 2016. Pre- and postoperative MRI characteristics were reviewed. Correlation was made with operative reports and clinical records to define postoperative appearances on MRI...
March 2, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29444541/functional-regions-of-the-medial-patellofemoral-ligament
#10
Gang Ji, Yifei Sun, Jiangfeng Lu, Yingzhen Niu, Fei Wang
The purpose of this study was to explore the anatomy and discuss functional regions of the medial patellofemoral ligament (MPFL). Twelve fresh-frozen knees specimens were dissected. All medial surfaces of knees were intact and did not have indication of injury. General feature of the MPFL were observed. All anatomical landmarks were carefully identified and marked. The length of the two functional regions were conducted and recorded. All data were obtained, described, and analyzed in the form of mean ± standard deviation...
February 14, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29432721/vastus-lateralis-motor-unit-firing-rate-is-higher-in-women-with-patellofemoral-pain
#11
Alessio Gallina, Michael A Hunt, Paul W Hodges, S Jayne Garland
OBJECTIVE: To compare neural drive, determined from motor unit firing rate, in the vastus medialis and lateralis in women with and without patellofemoral pain. DESIGN: Cross-sectional study. SETTING: University research laboratory. PARTICIPANTS: Women (N=56) 19 to 35 years of age, including 36 with patellofemoral pain and 20 controls. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Participants sustained an isometric knee extension contraction at 10% of their maximal voluntary effort for 70 seconds...
May 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29339848/habitual-patellar-dislocation-in-children-results-of-surgical-treatment-by-modified-four-in-one-technique
#12
Ravi Mittal, Avtar Singh Balawat, Vikrant Manhas, Amit Roy, Navin Kumar Singh
Background: Habitual patellar dislocation is a rare condition affecting children. The growth plates are open in children and any surgical intervention should take that in to consideration. We are describing a modified four in one technique for habitual patellar dislocation, which is a soft tissue procedure without the use of any implant. Method: In this study we included 6 children (4 females and 2 males) with open growth plates, which were diagnosed with habitual patellar dislocation...
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29300223/osteotomies-in-patello-femoral-instabilities
#13
David Dejour, Bertrand Le Coultre
Patellar instability is defined by clinical and radiologic criteria. The surgical treatment is aimed at restoring the congruence of the patellofemoral articulation and correcting extensor mechanism malalignment, to prevent recurrence of dislocation. The standard soft-tissue procedures are lateral release and vastus medialis advancement and medial patello femoral ligament plasty. Bony procedures are frequently performed in addition to soft-tissue surgery, to realign the extensor mechanism by means of tibial tubercle medialization, or to correct the patellar index in patella alta...
March 2018: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/29055385/is-quadriceps-h-reflex-excitability-a-risk-factor-for-patellofemoral-pain
#14
Marcella Ferraz Pazzinatto, Danilo de Oliveira Silva, Evangelos Pappas, Fernando Henrique Magalhães, Fábio Mícolis de Azevedo
Patellofemoral pain (PFP) is one of the most common conditions in orthopedic practice while recent evidence has suggested that it may be a predisposing factor to patellofemoral osteoarthritis. In addition to biomechanical alterations associated with the pathomechanisms underlying PFP, the investigation of neurophysiological alterations has provided novel information in the understanding of the pathophysiology of PFP. For instance, women with PFP present lower amplitude of the vastus medialis (VM) H-reflexes compared to pain-free controls, which suggests that the excitability of spinal reflexes might be a promising tool for discriminating woman with PFP in clinical practice...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29037636/effects-of-kinesio-taping-%C3%A2-on-knee-function-and-pain-in-athletes-with-patellofemoral-pain-syndrome
#15
Elaheh Aghapour, Fahimeh Kamali, Ehsan Sinaei
OBJECTIVE: To compare the knee performance and pain in athletes with patellofemoral pain syndrome (PFPS) before and after applying Kinesio Tape® (KT) on vastus medialis obliquus (VMO) muscle. PARTICIPANTS: Fifteen participants (10 females, five males) with unilateral PFPS were examined and compared under taped and untaped conditions. INTERVENTION: VMO of the involved leg was taped from origin to insertion, with 75% of KT's maximal length tension...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28750964/comparison-of-ischemic-compression-and-lumbopelvic-manipulation-as-trigger-point-therapy-for-patellofemoral-pain-syndrome-in-young-adults-a-double-blind-randomized-clinical-trial
#16
Shabnam Behrangrad, Fahimeh Kamali
OBJECTIVE: To compare the effectiveness of ischemic compression (IC) directly to the vastus medialis obliquus (VMO) versus lumbopelvic manipulation (LPM) in improving pain, functional status and sensitivity to mechanical stimulation of the VMO trigger point in patients with patellofemoral pain syndrome (PFPS). PARTICIPANTS: 40 patients with unilateral PFPS aged 20-30 years were selected randomly among patients with unilateral PFPS referred to physical therapy clinics of Shiraz University of Medical Sciences in Shiraz, Iran, between March 2014 and July 2014...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28714838/lower-extremity-muscle-activity-kinematics-and-dynamic-postural-control-in-individuals-with-patellofemoral-pain
#17
Shiho Goto, Naoko Aminaka, Phillip A Gribble
CONTEXT: Altered lower extremity muscle activity has been suggested to be associated with lower extremity kinematics in individuals with patellofemoral pain (PFP). However, few studies examined these relationships and the results are inconsistent. OBJECTIVES: To compare the lower extremity muscle activity, kinematics, pain level, and reach distance during the anterior reach of the Star Excursion Balance Test (SEBT) between participants with PFP and healthy individuals (CON)...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28697399/patellar-bracing-affects-semg-activity-of-leg-and-thigh-muscles-during-stance-phase-in-patellofemoral-pain-syndrome
#18
Fatemeh Salarie Sker, Mehrdad Anbarian, Amir H Yazdani, Pouria Hesari, Arash Babaei-Ghazani
BACKGROUND: Decreases in patellofemoral pain symptoms with bracing treatment have been established; but, the mechanisms remain unclear. The purpose of this study was to determine the immediate and long-term effects of the patellar bracing on electromyography (EMG) activity of the Vastus Medialis (VM) and Lateralis (VL), Rectus Femoris, lateral Gastrocnemius, Biceps Femoris and Semitendinosus (ST) muscles during level walking. METHODS: 12 eligible women aged 20-30 years with diagnosis of patellofemoral pain participated in the before and after study...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28504067/effectiveness-of-inclusion-of-dry-needling-in-a-multimodal-therapy-program-for-patellofemoral-pain-a-randomized-parallel-group-trial
#19
RANDOMIZED CONTROLLED TRIAL
Gemma V Espí-López, Pilar Serra-Añó, Juan Vicent-Ferrando, Miguel Sánchez-Moreno-Giner, Jose L Arias-Buría, Joshua Cleland, César Fernández-de-Las-Peñas
Study Design Randomized controlled trial. Background Evidence suggests that multimodal interventions that include exercise therapy may be effective for patellofemoral pain (PFP); however, no study has investigated the effects of trigger point (TrP) dry needling (DN) in people with PFP. Objectives To compare the effects of adding TrP DN to a manual therapy and exercise program on pain, function, and disability in individuals with PFP. Methods Individuals with PFP (n = 60) recruited from a public hospital in Valencia, Spain were randomly allocated to manual therapy and exercises (n = 30) or manual therapy and exercise plus TrP DN (n = 30)...
June 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28437490/the-diagnosis-and-initial-treatment-of-patellofemoral-disorders
#20
REVIEW
Alan C Merchant, John P Fulkerson, Wayne Leadbetter
Our purpose is to provide simple guidelines for the diagnosis and early care of patellofemoral disorders. Any clinician who treats knee problems, including family practitioners, rheumatologists, orthopedic surgeons, or physical therapists, must know how to make the correct diagnosis, or at least a presumptive diagnosis, at the initial visit. This can avoid unneeded and costly tests, ineffective treatment, and even damaging exercises and unnecessary surgery. The diagnosis of patellofemoral disorders is confusing because they can have many causes...
March 2017: American Journal of Orthopedics
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